<!DOCTYPE html>
<html lang='en'>
<head>
<title>gnu.scm - guix - Wojtek's customized Guix</title>
<meta name='generator' content='cgit v1.2.3'/>
<meta name='robots' content='noindex, nofollow'/>
<link rel='stylesheet' type='text/css' href='/cgit-static/cgit.css'/>
<link rel='stylesheet' type='text/css' href='/cgit-static/better-cgit-markdown-heading-color.css'/>
<link rel='shortcut icon' href='/cgit-static/favicon.ico'/>
<link rel='alternate' title='Atom feed' href='https://git.koszko.org/guix/atom/gnu.scm?h=koszko' type='application/atom+xml'/>
</head>
<body>
<div id='cgit'><table id='header'>
<tr>
<td class='logo' rowspan='2'><a href='/'><img src='https://git.koszko.org/cgit-static/cgit.png' alt='cgit logo'/></a></td>
<td class='main'><a href='/'>index</a> : <a href='/guix/'>guix</a></td><td class='form'><form method='get'>
<input type='hidden' name='id' value='6ccf8ea81f95963c0b7f945648106576008ee105'/><select name='h' onchange='this.form.submit();'>
<option value='koszko' selected='selected'>koszko</option>
<option value='koszko-scripts'>koszko-scripts</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'>s</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=e5b648e06ace9623a368f1d8c18f35612f56ce79'>refs</a><a href='/guix/log/gnu/packages/patches/sqlite-large-page-size-fix.patch'>log</a><a class='active' href='/guix/tree/gnu/packages/patches/sqlite-large-page-size-fix.patch?id=e5b648e06ace9623a368f1d8c18f35612f56ce79'>tree</a><a href='/guix/commit/gnu/packages/patches/sqlite-large-page-size-fix.patch?id=e5b648e06ace9623a368f1d8c18f35612f56ce79'>commit</a><a href='/guix/diff/gnu/packages/patches/sqlite-large-page-size-fix.patch?id=e5b648e06ace9623a368f1d8c18f35612f56ce79'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/patches/sqlite-large-page-size-fix.patch'>
<input type='hidden' name='id' value='e5b648e06ace9623a368f1d8c18f35612f56ce79'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/tree/?id=e5b648e06ace9623a368f1d8c18f35612f56ce79'>root</a>/<a href='/guix/tree/gnu?id=e5b648e06ace9623a368f1d8c18f35612f56ce79'>gnu</a>/<a href='/guix/tree/gnu/packages?id=e5b648e06ace9623a368f1d8c18f35612f56ce79'>packages</a>/<a href='/guix/tree/gnu/packages/patches?id=e5b648e06ace9623a368f1d8c18f35612f56ce79'>patches</a>/<a href='/guix/tree/gnu/packages/patches/sqlite-large-page-size-fix.patch?id=e5b648e06ace9623a368f1d8c18f35612f56ce79'>sqlite-large-page-size-fix.patch</a></div><div class='content'>blob: c561fa20a2731afd9ae8cbc8d550f2999032a7c2 (<a href='/guix/about/gnu/packages/patches/sqlite-large-page-size-fix.patch?id=e5b648e06ace9623a368f1d8c18f35612f56ce79'>about</a>) (<a href='/guix/plain/gnu/packages/patches/sqlite-large-page-size-fix.patch?id=e5b648e06ace9623a368f1d8c18f35612f56ce79'>plain</a>)
<table summary='blob content' class='blob'>
<tr><td class='linenumbers'><pre><a id='n1' href='#n1'>1</a>
<a id='n2' href='#n2'>2</a>
<a id='n3' href='#n3'>3</a>
<a id='n4' href='#n4'>4</a>
<a id='n5' href='#n5'>5</a>
<a id='n6' href='#n6'>6</a>
<a id='n7' href='#n7'>7</a>
<a id='n8' href='#n8'>8</a>
<a id='n9' href='#n9'>9</a>
<a id='n10' href='#n10'>10</a>
<a id='n11' href='#n11'>11</a>
<a id='n12' href='#n12'>12</a>
<a id='n13' href='#n13'>13</a>
<a id='n14' href='#n14'>14</a>
<a id='n15' href='#n15'>15</a>
<a id='n16' href='#n16'>16</a>
<a id='n17' href='#n17'>17</a>
<a id='n18' href='#n18'>18</a>
<a id='n19' href='#n19'>19</a>
<a id='n20' href='#n20'>20</a>
<a id='n21' href='#n21'>21</a>
<a id='n22' href='#n22'>22</a>
<a id='n23' href='#n23'>23</a>
<a id='n24' href='#n24'>24</a>
<a id='n25' href='#n25'>25</a>
<a id='n26' href='#n26'>26</a>
<a id='n27' href='#n27'>27</a>
<a id='n28' href='#n28'>28</a>
<a id='n29' href='#n29'>29</a>
<a id='n30' href='#n30'>30</a>
<a id='n31' href='#n31'>31</a>
<a id='n32' href='#n32'>32</a>
<a id='n33' href='#n33'>33</a>
<a id='n34' href='#n34'>34</a>
<a id='n35' href='#n35'>35</a>
<a id='n36' href='#n36'>36</a>
<a id='n37' href='#n37'>37</a>
<a id='n38' href='#n38'>38</a>
<a id='n39' href='#n39'>39</a>
<a id='n40' href='#n40'>40</a>
<a id='n41' href='#n41'>41</a>
<a id='n42' href='#n42'>42</a>
<a id='n43' href='#n43'>43</a>
<a id='n44' href='#n44'>44</a>
<a id='n45' href='#n45'>45</a>
<a id='n46' href='#n46'>46</a>
<a id='n47' href='#n47'>47</a>
<a id='n48' href='#n48'>48</a>
<a id='n49' href='#n49'>49</a>
<a id='n50' href='#n50'>50</a>
<a id='n51' href='#n51'>51</a>
<a id='n52' href='#n52'>52</a>
<a id='n53' href='#n53'>53</a>
<a id='n54' href='#n54'>54</a>
<a id='n55' href='#n55'>55</a>
<a id='n56' href='#n56'>56</a>
<a id='n57' href='#n57'>57</a>
<a id='n58' href='#n58'>58</a>
<a id='n59' href='#n59'>59</a>
<a id='n60' href='#n60'>60</a>
<a id='n61' href='#n61'>61</a>
<a id='n62' href='#n62'>62</a>
<a id='n63' href='#n63'>63</a>
<a id='n64' href='#n64'>64</a>
<a id='n65' href='#n65'>65</a>
<a id='n66' href='#n66'>66</a>
<a id='n67' href='#n67'>67</a>
<a id='n68' href='#n68'>68</a>
<a id='n69' href='#n69'>69</a>
<a id='n70' href='#n70'>70</a>
<a id='n71' href='#n71'>71</a>
<a id='n72' href='#n72'>72</a>
<a id='n73' href='#n73'>73</a>
<a id='n74' href='#n74'>74</a>
<a id='n75' href='#n75'>75</a>
<a id='n76' href='#n76'>76</a>
<a id='n77' href='#n77'>77</a>
<a id='n78' href='#n78'>78</a>
<a id='n79' href='#n79'>79</a>
<a id='n80' href='#n80'>80</a>
<a id='n81' href='#n81'>81</a>
<a id='n82' href='#n82'>82</a>
<a id='n83' href='#n83'>83</a>
<a id='n84' href='#n84'>84</a>
<a id='n85' href='#n85'>85</a>
<a id='n86' href='#n86'>86</a>
<a id='n87' href='#n87'>87</a>
<a id='n88' href='#n88'>88</a>
<a id='n89' href='#n89'>89</a>
<a id='n90' href='#n90'>90</a>
<a id='n91' href='#n91'>91</a>
<a id='n92' href='#n92'>92</a>
<a id='n93' href='#n93'>93</a>
<a id='n94' href='#n94'>94</a>
<a id='n95' href='#n95'>95</a>
<a id='n96' href='#n96'>96</a>
<a id='n97' href='#n97'>97</a>
<a id='n98' href='#n98'>98</a>
<a id='n99' href='#n99'>99</a>
<a id='n100' href='#n100'>100</a>
<a id='n101' href='#n101'>101</a>
<a id='n102' href='#n102'>102</a>
<a id='n103' href='#n103'>103</a>
<a id='n104' href='#n104'>104</a>
<a id='n105' href='#n105'>105</a>
<a id='n106' href='#n106'>106</a>
<a id='n107' href='#n107'>107</a>
<a id='n108' href='#n108'>108</a>
<a id='n109' href='#n109'>109</a>
<a id='n110' href='#n110'>110</a>
<a id='n111' href='#n111'>111</a>
<a id='n112' href='#n112'>112</a>
<a id='n113' href='#n113'>113</a>
<a id='n114' href='#n114'>114</a>
<a id='n115' href='#n115'>115</a>
<a id='n116' href='#n116'>116</a>
<a id='n117' href='#n117'>117</a>
<a id='n118' href='#n118'>118</a>
<a id='n119' href='#n119'>119</a>
<a id='n120' href='#n120'>120</a>
<a id='n121' href='#n121'>121</a>
<a id='n122' href='#n122'>122</a>
<a id='n123' href='#n123'>123</a>
<a id='n124' href='#n124'>124</a>
<a id='n125' href='#n125'>125</a>
<a id='n126' href='#n126'>126</a>
<a id='n127' href='#n127'>127</a>
<a id='n128' href='#n128'>128</a>
<a id='n129' href='#n129'>129</a>
<a id='n130' href='#n130'>130</a>
<a id='n131' href='#n131'>131</a>
<a id='n132' href='#n132'>132</a>
<a id='n133' href='#n133'>133</a>
<a id='n134' href='#n134'>134</a>
<a id='n135' href='#n135'>135</a>
<a id='n136' href='#n136'>136</a>
<a id='n137' href='#n137'>137</a>
<a id='n138' href='#n138'>138</a>
<a id='n139' href='#n139'>139</a>
<a id='n140' href='#n140'>140</a>
<a id='n141' href='#n141'>141</a>
<a id='n142' href='#n142'>142</a>
<a id='n143' href='#n143'>143</a>
<a id='n144' href='#n144'>144</a>
<a id='n145' href='#n145'>145</a>
<a id='n146' href='#n146'>146</a>
<a id='n147' href='#n147'>147</a>
<a id='n148' href='#n148'>148</a>
<a id='n149' href='#n149'>149</a>
<a id='n150' href='#n150'>150</a>
<a id='n151' href='#n151'>151</a>
<a id='n152' href='#n152'>152</a>
<a id='n153' href='#n153'>153</a>
<a id='n154' href='#n154'>154</a>
<a id='n155' href='#n155'>155</a>
<a id='n156' href='#n156'>156</a>
<a id='n157' href='#n157'>157</a>
<a id='n158' href='#n158'>158</a>
<a id='n159' href='#n159'>159</a>
<a id='n160' href='#n160'>160</a>
<a id='n161' href='#n161'>161</a>
<a id='n162' href='#n162'>162</a>
<a id='n163' href='#n163'>163</a>
<a id='n164' href='#n164'>164</a>
<a id='n165' href='#n165'>165</a>
<a id='n166' href='#n166'>166</a>
<a id='n167' href='#n167'>167</a>
<a id='n168' href='#n168'>168</a>
<a id='n169' href='#n169'>169</a>
<a id='n170' href='#n170'>170</a>
<a id='n171' href='#n171'>171</a>
<a id='n172' href='#n172'>172</a>
<a id='n173' href='#n173'>173</a>
<a id='n174' href='#n174'>174</a>
<a id='n175' href='#n175'>175</a>
<a id='n176' href='#n176'>176</a>
<a id='n177' href='#n177'>177</a>
<a id='n178' href='#n178'>178</a>
<a id='n179' href='#n179'>179</a>
<a id='n180' href='#n180'>180</a>
</pre></td>
<td class='lines'><pre><code>Add an experimental fix to avoid attempting to mmap memory from an
offset that is not a multiple of the system page size on systems with
page sizes larger than 32KB.

Patch by Dan Kennedy &lt;danielk1977@gmail.com&gt;.

--- sqlite-autoconf/sqlite3.c.orig	2014-03-22 23:44:47.055908203 -0400
+++ sqlite-autoconf/sqlite3.c	2014-03-22 23:44:06.716552734 -0400
@@ -24010,6 +24010,7 @@
 
 /* Forward reference */
 static int openDirectory(const char*, int*);
+static int unixGetpagesize(void);
 
 /*
 ** Many system calls are accessed through pointer-to-functions so that
@@ -24133,6 +24134,9 @@
 #define osMremap ((void*(*)(void*,size_t,size_t,int,...))aSyscall[23].pCurrent)
 #endif
 
+  { "getpagesize",  (sqlite3_syscall_ptr)unixGetpagesize, 0 },
+#define osGetpagesize ((int(*)(void))aSyscall[24].pCurrent)
+
 }; /* End of the overrideable system calls */
 
 /*
@@ -27792,6 +27796,36 @@
   return rc;        
 }
 
+/*
+** Return the system page size.
+**
+** This function should not be called directly by other code in this file. 
+** Instead, it should be called via macro osGetpagesize().
+*/
+static int unixGetpagesize(void){
+#if defined(_BSD_SOURCE)
+  return getpagesize();
+#else
+  return (int)sysconf(_SC_PAGESIZE);
+#endif
+}
+
+/*
+** Return the minimum number of 32KB shm regions that should be mapped at
+** a time, assuming that each mapping must be an integer multiple of the
+** current system page-size.
+**
+** Usually, this is 1. The exception seems to be systems that are configured
+** to use 64KB pages - in this case each mapping must cover at least two
+** shm regions.
+*/
+static int unixShmRegionPerMap(void){
+  int shmsz = 32*1024;            /* SHM region size */
+  int pgsz = osGetpagesize();   /* System page size */
+  assert( ((pgsz-1)&amp;pgsz)==0 );   /* Page size must be a power of 2 */
+  if( pgsz&lt;shmsz ) return 1;
+  return pgsz/shmsz;
+}
 
 /*
 ** Purge the unixShmNodeList list of all entries with unixShmNode.nRef==0.
@@ -27803,10 +27837,11 @@
   unixShmNode *p = pFd-&gt;pInode-&gt;pShmNode;
   assert( unixMutexHeld() );
   if( p &amp;&amp; p-&gt;nRef==0 ){
+    int nShmPerMap = unixShmRegionPerMap();
     int i;
     assert( p-&gt;pInode==pFd-&gt;pInode );
     sqlite3_mutex_free(p-&gt;mutex);
-    for(i=0; i&lt;p-&gt;nRegion; i++){
+    for(i=0; i&lt;p-&gt;nRegion; i+=nShmPerMap){
       if( p-&gt;h&gt;=0 ){
         osMunmap(p-&gt;apRegion[i], p-&gt;szRegion);
       }else{
@@ -28013,6 +28048,8 @@
   unixShm *p;
   unixShmNode *pShmNode;
   int rc = SQLITE_OK;
+  int nShmPerMap = unixShmRegionPerMap();
+  int nReqRegion;
 
   /* If the shared-memory file has not yet been opened, open it now. */
   if( pDbFd-&gt;pShm==0 ){
@@ -28028,9 +28065,12 @@
   assert( pShmNode-&gt;h&gt;=0 || pDbFd-&gt;pInode-&gt;bProcessLock==1 );
   assert( pShmNode-&gt;h&lt;0 || pDbFd-&gt;pInode-&gt;bProcessLock==0 );
 
-  if( pShmNode-&gt;nRegion&lt;=iRegion ){
+  /* Minimum number of regions required to be mapped. */
+  nReqRegion = ((iRegion+nShmPerMap) / nShmPerMap) * nShmPerMap;
+
+  if( pShmNode-&gt;nRegion&lt;nReqRegion ){
     char **apNew;                      /* New apRegion[] array */
-    int nByte = (iRegion+1)*szRegion;  /* Minimum required file size */
+    int nByte = nReqRegion*szRegion;   /* Minimum required file size */
     struct stat sStat;                 /* Used by fstat() */
 
     pShmNode-&gt;szRegion = szRegion;
@@ -28079,17 +28119,19 @@
 
     /* Map the requested memory region into this processes address space. */
     apNew = (char **)sqlite3_realloc(
-        pShmNode-&gt;apRegion, (iRegion+1)*sizeof(char *)
+        pShmNode-&gt;apRegion, nReqRegion*sizeof(char *)
     );
     if( !apNew ){
       rc = SQLITE_IOERR_NOMEM;
       goto shmpage_out;
     }
     pShmNode-&gt;apRegion = apNew;
-    while(pShmNode-&gt;nRegion&lt;=iRegion){
+    while( pShmNode-&gt;nRegion&lt;nReqRegion ){
+      int nMap = szRegion*nShmPerMap;
+      int i;
       void *pMem;
       if( pShmNode-&gt;h&gt;=0 ){
-        pMem = osMmap(0, szRegion,
+        pMem = osMmap(0, nMap,
             pShmNode-&gt;isReadonly ? PROT_READ : PROT_READ|PROT_WRITE, 
             MAP_SHARED, pShmNode-&gt;h, szRegion*(i64)pShmNode-&gt;nRegion
         );
@@ -28105,8 +28147,11 @@
         }
         memset(pMem, 0, szRegion);
       }
-      pShmNode-&gt;apRegion[pShmNode-&gt;nRegion] = pMem;
-      pShmNode-&gt;nRegion++;
+
+      for(i=0; i&lt;nShmPerMap; i++){
+        pShmNode-&gt;apRegion[pShmNode-&gt;nRegion+i] = &amp;((char*)pMem)[szRegion*i];
+      }
+      pShmNode-&gt;nRegion += nShmPerMap;
     }
   }
 
@@ -28321,19 +28366,6 @@
 }
 
 /*
-** Return the system page size.
-*/
-static int unixGetPagesize(void){
-#if HAVE_MREMAP
-  return 512;
-#elif defined(_BSD_SOURCE)
-  return getpagesize();
-#else
-  return (int)sysconf(_SC_PAGESIZE);
-#endif
-}
-
-/*
 ** Attempt to set the size of the memory mapping maintained by file 
 ** descriptor pFd to nNew bytes. Any existing mapping is discarded.
 **
@@ -28369,8 +28401,12 @@
   if( (pFd-&gt;ctrlFlags &amp; UNIXFILE_RDONLY)==0 ) flags |= PROT_WRITE;
 
   if( pOrig ){
-    const int szSyspage = unixGetPagesize();
+#if HAVE_MREMAP
+    i64 nReuse = pFd-&gt;mmapSize;
+#else
+    const int szSyspage = osGetpagesize();
     i64 nReuse = (pFd-&gt;mmapSize &amp; ~(szSyspage-1));
+#endif
     u8 *pReq = &amp;pOrig[nReuse];
 
     /* Unmap any pages of the existing mapping that cannot be reused. */
@@ -31116,7 +31152,7 @@
 
   /* Double-check that the aSyscall[] array has been constructed
   ** correctly.  See ticket [bb3a86e890c8e96ab] */
-  assert( ArraySize(aSyscall)==24 );
+  assert( ArraySize(aSyscall)==25 );
 
   /* Register all VFSes defined in the aVfs[] array */
   for(i=0; i&lt;(sizeof(aVfs)/sizeof(sqlite3_vfs)); i++){
</code></pre></td></tr></table>
</div> <!-- class=content -->
                         <div class=footer>generated by
                             <a href="https://git.zx2c4.com/cgit/about/">
                                 cgit
                             </a>
                         </div>
                        </div> <!-- id=cgit -->
</body>
</html>
